不同种源翅荚木的抗寒性

doi:10.11707/j.1001-7488.20070404

林业科学 ›› 2007, Vol. 43 ›› Issue (04): 24-30.doi: 10.11707/j.1001-7488.20070404

不同种源翅荚木的抗寒性

何小勇^1,2 柳新红³ 袁德义¹ 谭晓风¹ 赵思东¹ 张琳¹ 魏来¹

1.中南林业科技大学经济林育种与栽培国家林业局重点实验室,长沙410004；2.浙江省丽水市科普工作指导站丽水323000

收稿日期:2007-01-09 修回日期:1900-01-01 出版日期:2007-04-25 发布日期:2007-04-25

Cold Resistance of Zenia insignis from Different Provenances

He Xiaoyong^1,2,Liu Xinhong³,Yuan Deyi¹,Tan Xiaofeng¹,Zhao Sidong¹,Zhang Lin¹,Wei Lai¹

1. Key Lab of Non-Wood Forest Product of State Forestry Administration Central South University of Forestry and Technology Changsha 410004; 2.Lishui Popular Science Station of Zhejiang Lishui323000; 3. Zhejing Forestry Academy Hangzhou 310023

Received:2007-01-09 Revised:1900-01-01 Online:2007-04-25 Published:2007-04-25

摘要/Abstract

摘要：

以5个种源的翅荚木叶为材料,采用叶片离析法和石蜡制片技术观测叶片结构特征、电导率法测定其半致死温度、差示热量扫描仪测定其过冷点温度,并结合田间试验分析不同种源翅荚木苗期的抗寒性及其与叶片结构的关系。结果表明:湖南通道翅荚木种源抗寒性最强,苗期在湖南株洲无冻害,在浙江丽水冻害率为4.83%,极显著低于其他种源;其叶片半致死温度为-5.34℃,过冷点温度为-15.04℃,均低于广东翁源和广西忻城种源。不同种源翅荚木叶片细胞结构紧密度(CTR)和疏松度(SR)与种源的抗寒性有一定的关系,CTR值越大、SR值越小,种源的抗寒性越强。

关键词: 翅荚木, 种源, 抗寒性, 叶片组织结构, 半致死温度, 过冷温度

Abstract:

Five provenances of Zenia insignis were used as materials to observe their leaf structural features by epidermal and paraffin slice methods, measure leaf semi-lethal temperature by electric conductivity, and measure leaf supercool point temperature by differential scanning calorimetry. The cold resistance of Z. insignis from different provenances and the correlation between the clod resistance and leaf structural features were analyzed together with field survey. Provenance from Tongdao, Hunan showed the strongest cold resistance. Its cold injury percentage in Zhuzhou, Hunan and Lishui, Zhejiang was zero and 4.83%, respectively, which were significantly lower than that of the other provenances. Its leaf semi-lethal temperature and supercool point temperature were -5.34 ℃ and -15.04 ℃, respectively, which were lower than those of the provenances from Wengyuan, Guangdong and Xincheng, Guangxi. In addition, cell tense ratio (CTR) and spongy ratio (SR) of Z. insignis leaf were correlated with its cold resistance; the cold resistance ability became stronger with the increase of CTR and the decrease of SR.

Key words: Zenia insignis, provenance, cold resistance, leaf tissue structure, semi-lethal temperature, supercool point temperature

何小勇;柳新红袁德义谭晓风赵思东张琳魏来. 不同种源翅荚木的抗寒性[J]. 林业科学, 2007, 43(04): 24-30.

He Xiaoyong;Liu Xinhong;Yuan Deyi;Tan Xiaofeng;Zhao Sidong;Zhang Lin;Wei Lai. Cold Resistance of Zenia insignis from Different Provenances[J]. Scientia Silvae Sinicae, 2007, 43(04): 24-30.

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不同种源翅荚木的抗寒性

Cold Resistance of Zenia insignis from Different Provenances

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